:root {
  --c1: #775537;   /* Old Copper — 品牌主色：顶部栏/底部栏背景、表头、选中态 */
  --c2: #FBE29D;   /* Butter Yellow — 强调色：主按钮、高亮行、选中的快捷芯片 */
  --c3: #C0DDDA;   /* Nebula — 次要强调：色条、徽标、顶部辅助色 */
  --c4: #F1F1F1;   /* Seashell — 页面背景 */
  --color-ink: #775537;
  --color-ink-muted: rgba(119, 85, 55, 0.62);
  --color-surface: #FFFFFF;
  --color-bg: #F1F1F1;
  --color-border: #E3DED7;
  --color-danger: #C4453D;
  --radius-card: 14px;
  --radius-btn: 10px;
  --radius-chip: 999px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-tap-highlight-color: transparent;
  scrollbar-width: none;
  -ms-overflow-style: none;
  overflow-x: hidden;
  width: 100%;
}
html::-webkit-scrollbar, body::-webkit-scrollbar { display: none; width: 0; height: 0; }

#app {
  min-height: 100vh;
  min-height: 100dvh;
}

/* ---------- Top bar：颜色1 + 颜色3 ---------- */
.topbar {
  background: var(--c1);
  color: var(--c3);
  padding: calc(env(safe-area-inset-top, 0px) + 16px) 18px 16px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  border-bottom: 4px solid var(--c3);
}
.topbar h1 { margin: 0; font-size: 20px; font-weight: 800; letter-spacing: 0.2px; color: var(--c3); }

#views {
  padding: calc(env(safe-area-inset-top, 0px) + 76px) 16px 110px;
  max-width: 560px;
  width: 100%;
  margin: 0 auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
#views::-webkit-scrollbar { display: none; width: 0; height: 0; }

.view { display: none; }
.view.active { display: block; animation: fadein .18s ease; }
@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Tab bar：默认颜色1底白字，选中变白底黑字 ---------- */
.tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--c1);
  padding: 8px 6px calc(env(safe-area-inset-bottom, 0px) + 8px);
  z-index: 20;
  gap: 4px;
}
.tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  background: none;
  border: none;
  padding: 8px 2px;
  margin: 2px 0;
  border-radius: 14px;
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  font-family: inherit;
}
.tab-btn svg {
  width: 23px; height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.tab-btn.active { background: #FFFFFF; color: #000000; font-weight: 800; }

/* ---------- Cards / stats ---------- */
.stat-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 18px;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--c3);
  border-radius: var(--radius-card);
  padding: 14px 16px;
}
.stat-card .num { font-size: 30px; font-weight: 800; color: var(--color-ink); line-height: 1.1; font-variant-numeric: tabular-nums; letter-spacing: -0.5px; }
.stat-card .lbl { font-size: 12px; color: var(--color-ink-muted); margin-top: 4px; font-weight: 600; }

.duration-cards { grid-template-columns: repeat(3, 1fr); margin-top: -8px; }
.duration-cards .stat-card { padding: 10px 8px; text-align: center; border-left-width: 3px; }
.duration-cards .num { font-size: 21px; }
.duration-cards .lbl { font-size: 11px; }

.section-head { display: flex; justify-content: space-between; align-items: baseline; margin: 6px 0 10px; }
.section-head h2 { font-size: 15px; margin: 0; color: var(--color-ink); font-weight: 800; }

.record-list { display: flex; flex-direction: column; gap: 8px; }
.record-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.record-item .ri-main { display: flex; flex-direction: column; gap: 2px; }
.record-item .ri-coach { font-weight: 800; font-size: 14.5px; color: var(--color-ink); }
.record-item .ri-meta { font-size: 12.5px; color: var(--color-ink-muted); }
.record-item .ri-value {
  font-weight: 800;
  color: var(--color-ink);
  font-size: 13.5px;
  white-space: nowrap;
  background: var(--c3);
  padding: 4px 10px;
  border-radius: var(--radius-chip);
}
.record-item { cursor: pointer; }

.empty-hint { color: var(--color-ink-muted); font-size: 13.5px; text-align: center; padding: 18px 10px; line-height: 1.6; }

/* ---------- Forms ---------- */
.field-label { display: block; font-size: 13px; font-weight: 800; color: var(--color-ink); margin: 18px 0 8px; }
.field-label:first-of-type { margin-top: 0; }

.text-input, .select-input {
  width: 100%;
  min-width: 0;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-ink);
  font-weight: 600;
}
.text-input:focus, .select-input:focus { outline: none; border-color: var(--c1); }

input[type="date"], input[type="month"] {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  font-size: 14px;
  padding-right: 8px;
  -webkit-appearance: none;
  appearance: none;
}
input[type="date"]::-webkit-date-and-time-value { text-align: left; }

.select-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23775537' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 38px;
}

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }

.quick-chip {
  border: 1.5px solid var(--c1);
  background: var(--color-surface);
  color: var(--color-ink);
  border-radius: var(--radius-chip);
  padding: 8px 14px;
  font-size: 13.5px;
  font-weight: 800;
  font-family: inherit;
  margin-right: 8px;
}
.quick-chip.active { background: var(--c2); border-color: var(--c2); color: var(--color-ink); }

.toggle-row { display: flex; gap: 8px; }
.toggle-btn {
  flex: 1;
  padding: 12px 8px;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-btn);
  font-size: 14.5px;
  font-family: inherit;
  color: var(--color-ink-muted);
  font-weight: 700;
}
.toggle-btn.active { background: var(--c1); border-color: var(--c1); color: #FFFFFF; }

.field-block { margin-top: 14px; }

.stepper { display: flex; align-items: center; gap: 12px; margin-top: 8px; }
.stepper-btn {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1.5px solid var(--c1);
  background: var(--color-surface);
  font-size: 20px;
  font-weight: 800;
  color: var(--color-ink);
}
.stepper-btn:active { background: var(--c1); color: #fff; }
.stepper-input {
  flex: 1;
  text-align: center;
  font-size: 21px;
  font-weight: 800;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-btn);
  padding: 10px;
  font-family: inherit;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums;
}

.form-actions { margin-top: 28px; display: flex; flex-direction: column; gap: 12px; }

.btn {
  border: none;
  border-radius: var(--radius-btn);
  padding: 14px 18px;
  font-size: 15.5px;
  font-weight: 800;
  font-family: inherit;
  transition: transform .05s ease;
}
.btn-primary {
  background: var(--c2);
  color: var(--color-ink);
  box-shadow: 0 3px 0 var(--c1);
}
.btn-primary:active { transform: translateY(3px); box-shadow: 0 0 0 var(--c1); }
.btn-outline {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 2px solid var(--c1);
}
.btn-danger { background: var(--color-surface); color: var(--color-danger); border: 2px solid var(--color-danger); }
.btn-compact { padding: 11px 16px; white-space: nowrap; }
.btn-block { width: 100%; margin-top: 8px; }
.btn-half { flex: 1; }

/* ---------- Coaches ---------- */
.add-coach-row { display: flex; gap: 8px; margin-bottom: 18px; }
.add-coach-row .text-input { flex: 1; }
.coach-list { display: flex; flex-direction: column; gap: 8px; }
.coach-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.coach-item .ci-top { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.coach-item .ci-name { font-weight: 800; font-size: 15px; color: var(--color-ink); }
.coach-item .ci-status { font-size: 11.5px; margin-left: 8px; padding: 3px 9px; border-radius: var(--radius-chip); font-weight: 700; color: var(--color-ink); }
.coach-item .ci-status.active { background: var(--c3); }
.coach-item .ci-status.disabled { background: var(--c2); }
.coach-item .ci-actions { display: flex; gap: 8px; }
.ci-actions button {
  flex: 1;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-btn);
  padding: 7px 6px;
  font-size: 12.5px;
  font-weight: 700;
  font-family: inherit;
  color: var(--color-ink);
}
.ci-actions button.ci-danger { border-color: var(--color-danger); color: var(--color-danger); }

/* ---------- Stats table ---------- */
.range-picker { margin-bottom: 18px; }
.range-row { display: flex; align-items: center; gap: 8px; margin-top: 8px; }
.range-row .text-input { flex: 1; min-width: 0; }
.range-sep { color: var(--color-ink-muted); font-size: 13px; font-weight: 600; }

/* 横向滚动容器：可拖动，但隐藏滚动条 */
.table-scroll {
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.table-scroll::-webkit-scrollbar { display: none; height: 0; width: 0; }

.stats-table { width: 100%; border-collapse: collapse; background: var(--color-surface); border-radius: var(--radius-card); overflow: hidden; border: 1px solid var(--color-border); }
.stats-table th, .stats-table td { padding: 11px 8px; font-size: 12.5px; text-align: center; border-bottom: 1px solid var(--color-border); }
.stats-table th { background: var(--c1); color: #FFFFFF; font-weight: 800; font-size: 11.5px; }
.stats-table td.coach-name { text-align: left; font-weight: 800; color: var(--color-ink); }
.stats-table tr:last-child td { border-bottom: none; }
.stats-table tbody tr { cursor: pointer; }
.stats-table tfoot td { font-weight: 800; background: var(--c2); color: var(--color-ink); }

.detail-panel { margin-top: 10px; padding: 10px 12px; background: var(--c3); border-radius: var(--radius-card); font-size: 13px; }
.detail-panel .dp-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed rgba(119,85,55,0.18); }
.detail-panel .dp-row:last-child { border-bottom: none; }

/* ---------- Export ---------- */
.check-list { display: flex; flex-direction: column; gap: 8px; margin-top: 6px; }
.check-item { display: flex; align-items: center; gap: 10px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-btn); padding: 10px 12px; font-size: 14px; font-weight: 600; color: var(--color-ink); }
.check-item input { width: 18px; height: 18px; accent-color: var(--c1); }

/* ---------- Home page enrichment ---------- */
.quick-actions { display: flex; gap: 10px; margin-bottom: 20px; }

.coach-overview-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 4px; }
.coach-overview-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--c3);
  border-radius: var(--radius-card);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.coach-overview-item .co-main { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.coach-overview-item .co-name { font-weight: 800; font-size: 14.5px; color: var(--color-ink); }
.coach-overview-item .co-duration { font-size: 11px; color: var(--color-ink-muted); font-weight: 600; }
.coach-overview-item .co-metrics { display: flex; gap: 14px; font-size: 12.5px; color: var(--color-ink-muted); font-weight: 600; flex-shrink: 0; }
.coach-overview-item .co-metrics b { color: var(--color-ink); font-size: 13.5px; }

/* ---------- Entry page: collapsible coach management ---------- */
.coach-manage { margin-top: 30px; border-top: 1px solid var(--color-border); padding-top: 16px; }
.link-btn {
  background: none;
  border: none;
  color: var(--color-ink);
  font-weight: 800;
  font-size: 14px;
  font-family: inherit;
  padding: 4px 0;
}
.coach-manage-panel { margin-top: 12px; }

/* ---------- Stats toolbar ---------- */
.stats-toolbar { display: flex; justify-content: flex-end; margin-bottom: 14px; }

/* ---------- Export modal ---------- */
.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(119, 85, 55, 0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 50;
}
.modal-card {
  background: var(--color-surface);
  width: 100%;
  max-height: 86%;
  overflow-y: auto;
  border-radius: 20px 20px 0 0;
  padding: 20px 18px calc(env(safe-area-inset-bottom, 0px) + 20px);
  border-top: 4px solid var(--c2);
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.modal-card::-webkit-scrollbar { display: none; width: 0; height: 0; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.modal-head h3 { margin: 0; font-size: 17px; color: var(--color-ink); font-weight: 800; }
.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  line-height: 1;
  color: var(--color-ink-muted);
  padding: 4px 6px;
}